noun
heater; heating unit
Refers to a device or appliance used for heating a room or space. Common in product descriptions and everyday conversation.
寒いので暖房機をつけました。
It was cold, so I turned on the heater.
この暖房機は省エネです。
This heater is energy-efficient.
Compound of 暖房 (heating) and 機 (machine, device).